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Advanced Waveform Synthesis with Pulse-driven Josephson Voltage Standards
Published
Author(s)
Justus A. Brevik, Nathan E. Flowers-Jacobs, Anna E. Fox, Evan B. Golden, Paul D. Dresselhaus, Samuel P. Benz
Abstract
We describe the implementation of new commercial pulse-bias electronics that have enabled an improvement in the generation of quantum-accurate waveforms both with and without low-frequency compensation biases. We have used these electronics to apply a multilevel pulse bias to the Josephson arbitrary waveform synthesizer and have generated, for the first time, a quantum-accurate bipolar sinusoidal waveform without the use of a low-frequency compensation bias current. This uncompensated 1 kHz waveform was synthesized with an rms amplitude of 325 mV andmaintained its quantum accuracy over a 1.5mAoperating current range. The same technique and equipment was also used to synthesize a quantum-accurate 1 MHz sinusoid with a 1.2 mA operating margin. In addition, we have synthesized a compensated 1 kHz sinusoid with an rms amplitude of 1 V and a 2.7 mA operating margin.
Brevik, J.
, Flowers-Jacobs, N.
, Fox, A.
, Golden, E.
, Dresselhaus, P.
and Benz, S.
(2017),
Advanced Waveform Synthesis with Pulse-driven Josephson Voltage Standards, IEEE Transactions on Applied Superconductivity, [online], https://doi.org/10.1109/TASC.2017.2662708
(Accessed October 1, 2025)